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clinical outcomes of endoscopic resection of superficial nonampullary duodenal epithelial tumors: A 10-year retrospective, single-center study

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World Journal of Gastrointestinal Surgery 2022年第4期14卷 329-340页

作者： Joon Hyun cho Ki Young Lim Eun Jung Lee si Hyung Lee Division of Gastroenterology and Hepatology Department of Internal MedicineYeungnam University College of MedicineDaegu 42415South Korea

BAcKGRoUND Although premalignant duodenal lesions such as adenomas are uncommon,the incidences of these lesions have increased in recent times,and thus,the demand for minimally invasive treatments such as endoscopic resection(er)has also ***,er in the duodenum is more challenging than er in other locations of the gastrointestinal *** To evaluate the safety and efficacy of er for superficial nonampullary duodenal epithelial tumors(SNADETs)METHoDS We per.ormed a retrospective observational study on 56 consecutive patients(58 lesions)diagnosed with SNADETs that underwent er from January 2011 to December 2020 at Yeungnam University *** demographics,lesion characteristics,and procedural and technical data were collected,and clinical outcomes,including procedure-related complications,completeness of resection,and recurrence were *** Median patient age was 57 years[range,26–77,30(53.6%)men].Endoscopic mucosal resection(EMR)was per.ormed on 57 lesions(98.3%)and snare polypectomy on one(1.7%).Lesions consisted of 52 adenomas with low-grade dysplasia(89.7%),3 adenomas with high-grade dysplasia(5.2%),and 3 intramucosal adenocarcinomas(5.2%).There were 16 cases of intraprocedural bleeding(27.6%)and 1 case of delayed bleeding(1.7%),and all these 17 cases were successfully managed *** per.oration or procedure-related death *** lesion size was associated with an increased risk of EMR-related bleeding(P=0.033).During a median follow-up per.od of 23 mo(range 6–100 mo),no local recurrence occurred,despite the fact one-third of the patients(19 lesions,32.8%)underwent piecemeal resection and 3 patients(3 lesions,5.2%)that underwent en bloc resection had a pathologically determined positive lateral *** patient died from a primary duodenal *** The majority of SNADETs can be safely and curatively resected by EMR,and thus,based on consideration of the high incidence of fatal complications attribut

关键词： Duodenum Adenoma Endoscopic mucosal resection Endoscopic resection Superficial nonampullary duodenal epithelial tumor

A compound Fault Integrated Diagnosis Method for Rotating Machinery Base on Dimensionless Immune Detector

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A Compound Fault Integrated Diagnosis Method for Rotating Ma...

Stability of trivalent human papillomavirus(types 16,18,58)recombinant vaccine(Escherichia coli)

第25届中国控制与决策会议

作者： Guoxi Sun Aisong Qin Qinghua Zhang Qin Hu Xiaosheng si college of computer and Electronic Information Guangdong University of Petrochemical Technology college of Information Engineering Taiyuan University of Technology School of Automation Guangdong University of Technology Department of Automation Tsinghua University

ISBN: (纸本)9781467355339

Real-time and accuracy fault diagnosis is the key technique to realize timely effective maintenance and health management for rotating machinery, most faults of which are compound under actual working conditions. Many com- pound faults are coupled with each other, fuzzy, object and some complex characteristics so it is a bottleneck problem which is very tough to break through in fault diagnosis field. Early research results indicate that diagnosis with dimen- sionless parameters have got good effects in single fault for rotating machinery, but under simulating actual working state of compound faults, there are obvious overlap in ranges of dimensionless parameters calculated by vibration monitoring data of each compound faults, that is to say, it is hard to distinguish the ranges of dimensionless parameters of each fault, causing complexity of diagnosis rise, and the existing method is hard to deal with this problem. To solve the difficult problem, an online fusion fault diagnosis method for rotating machinery based on dimensionless immune detector and evidence reasoning (er) is proposed. Experimental result demonstrates that the method can realize effectively real-time fault diagnose for rotating machinery and has high potential applications in real project.

关键词： compound fault diagnosis Dimensionless parameter Evidence reasoning Rotating machinery

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chinese Medical Journal 2021年第24期134卷 3020-3022页

作者： Yu-Ying Liu Hai-Jiang Zhang er-cui Shen Dan chen Yan Wang si-Jia Fu Fei Yin Gui-Feng Zhang Yi-Guo Shen Yong-Jiang Liu Quality Department of Beijing Health Guard Biotechnology Inc. BDADaxing DistrictBeijing 100176China National Key Laboratory of Biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of chemical and Engineering University of Chinese Academy of SciencesBeijing 100049China Research and Development Department of Beijing Health Guard Biotechnology Inc. BDADaxing DistrictBeijing 100176China

To the Editor:There are 530,000 new cases of cervical cancer and 270,000 deaths annually in the world,85%occur in developing *** them,about 150,000 new cases of cervical cancer are in china each year,accounting for one-third of the total patients worldwide.[1]Vaccines are the most economical and effective ways of preventing infectious *** stop the transmission of human papillomavirus(HPV)fundamentally,the most effective measure is to vaccinate safe and effective HPV vaccines.[2,3]Numerous studies have shown that vaccines based on HPV L1 virus-like particles(VLPs)have good safety and protective efficacy.[4]Infection of HPV16,HPV18,and HPV58 viruses is the main cause of cervical cancer in chinese *** preventing the infection of HPV16,HPV18,and HPV58 viruses,85.0%to 93.7%of cervical cancers can be prevented.[5].

关键词： papillomavirus protective cervical

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双列球轴承中频感应淬火数值模拟

材料热处理学报 2018年第1期39卷 137-144页

作者：臧乐航邓四二张文虎河南科技大学机电工程学院河南洛阳471003 辽宁重大装备制造协同创新中心辽宁大连116024 北京控制工程研究所北京100190

基于温度场、组织场、电磁场和应力/应变场耦合模型,对双列球轴承的感应淬火过程进行数值模拟,研究感应淬火过程中轴承内圈各部位的升温过程、冷却过程、组织转变和应力变化等。结果表明：感应加热的升温速度会随着感应频率和电流密度... 详细信息

基于温度场、组织场、电磁场和应力/应变场耦合模型,对双列球轴承的感应淬火过程进行数值模拟,研究感应淬火过程中轴承内圈各部位的升温过程、冷却过程、组织转变和应力变化等。结果表明：感应加热的升温速度会随着感应频率和电流密度的增大而增大;感应加热后一般的淬硬层深度为2.1 mm,淬硬层的深度会随着感应频率的增加逐渐降低;在残留奥氏体较多的部位残余应力较大;感应加热时轴承各个部位的升温速度与感应器形状有关。

关键词：感应淬火淬硬层双列球轴承残余应力残留奥氏体

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基于全息投影技术的体感互动控制系统

自动化技术与应用 2024年第2期43卷 26-30页

作者：保志荣祝锦发黄思奇陈崇君广东电网有限责任公司汕尾供电局广东汕尾516600

本文设计基于全息投影技术的体感互动控制系统,有效控制用户体感互动操作过程。通过全息投影显像模块利用高速多分幅激光全息投影仪,感应用户操作手势及场景,获取用户及场景的激光全息图片,成像单元依据全息图片,利用金字塔结构获取用... 详细信息

本文设计基于全息投影技术的体感互动控制系统,有效控制用户体感互动操作过程。通过全息投影显像模块利用高速多分幅激光全息投影仪,感应用户操作手势及场景,获取用户及场景的激光全息图片,成像单元依据全息图片,利用金字塔结构获取用户及场景的全息影像;经由无线通信模块传输至体感互动控制模块,依据三维全息影像,建立手指几何模型,识别手指触碰投影面的状态,通过触碰投影面完成互动控制;利用体感互动面呈现互动画面。实验证明:该系统可有效构建用户及场景的全息影像,并有效控制体感互动操作过程;不同光束波长时,全息成像颜色效果较优。

关键词：全息投影技术体感互动控制系统激光全息图片

航空发动机双转子-滚动轴承耦合系统的动力特性分析

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航空动力学报 2010年第10期25卷 2386-2395页

作者：邓四二贺凤祥杨海生李云龙河南科技大学机电工程学院洛阳471003

在轴承动力学和转子动力学基础上建立了某航空发动机双转子-滚动轴承耦合系统的非线性动力学数学模型,采用Newmark有限元法进行了数值求解,就转子转速、中介轴承的游隙和滚子个数以及支承轴承参数对双转子系统动力特性的影响进行了分析... 详细信息

在轴承动力学和转子动力学基础上建立了某航空发动机双转子-滚动轴承耦合系统的非线性动力学数学模型,采用Newmark有限元法进行了数值求解,就转子转速、中介轴承的游隙和滚子个数以及支承轴承参数对双转子系统动力特性的影响进行了分析并加以实验验证.研究结果表明:①中介圆柱滚子轴承游隙值对双转子系统动力特性影响很大,其原始游隙值取20μm更利于系统运行的稳定性;②支承轴承内、外沟曲率半径的选取将直接影响着双转子系统动力特性;③高压转子与低压转子耦合节点处位移随高压转子转速的增加而减小,随低压转子转速的增加而增加;④中介耦合轴承节点处位移的理论计算值与实验值较为吻合,最大误差为18.7%.

关键词：双转子系统滚动轴承动力特性耦合中介轴承

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轴承组件轴承保持架放尺模型试验研究

航空动力学报 2007年第4期22卷 666-671页

作者：杨茹萍邓四二李建华马富建河南科技大学建筑工程学院大连理工大学机械学院大连116023 洛阳轴承研究所

基于相似理论分析了轴承保持架模型的动力相似判据,根据模态分析理论得出主要模态参数的相似比,制作放尺比3∶1的保持架模型,进行了保持架模型动态特性试验,由试验结果得到实物保持架的固有频率.并通过轴承组件动态响应试验进行了验证.

关键词：航空航天推进系统滚动轴承保持架相似理论相似判据模型试验

Syntheses, Structures, Fluorescence and Magnetism of six Lanthanide Metal-organic Frameworks Based on silicon-centered Tetrahedral Ligand

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chemical Research in chinese Universities 2013年第2期29卷 196-200页

作者： LI Yang-xue XUE Ming GUo Li-jia HUANG Lin cHEN si-ru QIU Shi-lun State Key Laboratory of Inorganic Synthesis and Preparative chemistry Jilin University Changchun 130012 P. R. China

Multifunctional lanthanide metal-organic frameworks（MoFs）, M（H4TcPS）（H20）l.5[M=Tb（JUc-95a）, er（JUc-95b）, Dy（JUc-95c）, Tm（JUc-95d）, Y（JUc-95e） and Pr（JUc-95f）; H4TcPS=tetrakis（4-carboxyphenyl）silane] were synthesized via the reaction of the lanthanide metal ions（Ln3） with a rigid silicon-centered tetrahedral carbo- xylate ligand H4TcPS via a hydrothermal synthesis method. X-Ray diffraction（XRD） analyses reveal that they are extremely similar in structure and crystallized in a monoclinic system with space group c2/c. Two eight-coordinated metal centers and four tetrahedral H4TcPS groups constructed a paddle-wheel building block. The paddle-wheel buil- ding blocks assembled with each other via one oxygen bridge from a water molecule to lead to a 1D infinite inorganic rod-shaped chain, --Y--o--c--o--Y--, along the [001] direction. These 1D inorganic rod-shaped chains linked with the phenyl groups of the tetrahedral HaTcPS ligand to form a 3D framework. In addition, the luminescent and magnetic properties of these compounds show that they could be potential antifer.omagnetic and fluorescent mate- rials.

关键词： Metal-organic framework Tetrakis(4-carboxyphenyl)silane Magnetic property Fluorescence

基于柔性光伏组件的重型卡车驾驶室供能系统的实验研究

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太阳能 2024年第4期 29-40页

作者：王诗怡赵斌石尔裴彩钰李子健韩承煜长沙理工大学能源与动力工程学院长沙410114

中国重型卡车保有量大,驾驶员工作强度极大,驾驶室内空间有限且封闭,提高驾驶员的热舒适性对于缓解其疲劳、提高行车安全性具有重要意义。为在提高驾驶员热舒适性的同时减少重型卡车的能源消耗,研发了一套基于柔性光伏组件的重型卡车驾... 详细信息

中国重型卡车保有量大,驾驶员工作强度极大,驾驶室内空间有限且封闭,提高驾驶员的热舒适性对于缓解其疲劳、提高行车安全性具有重要意义。为在提高驾驶员热舒适性的同时减少重型卡车的能源消耗,研发了一套基于柔性光伏组件的重型卡车驾驶室供能系统,以国产重型卡车中销量最高的车型为例搭建了重型卡车驾驶室实物模型,对使用柔性光伏组件供电和半导体制冷装置实现驾驶室局部温度控制和充放电技术集成的应用方法进行了探索,并通过实验从局部温度控制策略、光伏发电与变负载充电关系这两个方面对本供能系统设计的合理性进行了验证。研究结果表明:以长沙地区为例,经计算,重型卡车(平稳运行时)驾驶室内的夏季制冷总负荷为3995 W,使用6组(共18片)半导体制冷片组即可达到驾驶室局部的制冷效果。使用人工环境箱模拟长沙地区夏季、冬季环境温度进行局部温度控制效果实验,本供能系统的制冷和供暖效果均可满足人体的热舒适性需求,验证了所提出局部温度控制策略的可行性。根据光伏发电与变负载充电实验,1块XZL-A100型单晶硅柔性光伏组件的年发电量约为13.3 kWh,本供能系统的光伏发电模块采用6块单晶硅柔性光伏组件并联,发电量可以满足重型卡车驾驶室局部温度控制的用电需求。

关键词：柔性光伏组件重型卡车驾驶室半导体制冷光伏发电局部温度控制供能系统热舒适性

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